Statistical tests (AUC difference)
##
## Two Sample t-test
##
## data: d.friends.diffs and d.enemy.diffs
## t = 2.258, df = 47, p-value = 0.02863
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
## 0.05517691 0.95658334
## sample estimates:
## mean of x mean of y
## 1.2049585 0.6990784
Statistical tests (difference in expected rating)
## [1] "terrible"
##
## Two Sample t-test
##
## data: vals.friend and vals.enemy
## t = -0.36931, df = 47, p-value = 0.7136
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
## -0.2491472 0.1718596
## sample estimates:
## mean of x mean of y
## 0.2710551 0.3096989
##
## [1] "bad"
##
## Two Sample t-test
##
## data: vals.friend and vals.enemy
## t = -2.4607, df = 47, p-value = 0.0176
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
## -0.47820540 -0.04800099
## sample estimates:
## mean of x mean of y
## 0.7518443 1.0149475
##
## [1] "good"
##
## Two Sample t-test
##
## data: vals.friend and vals.enemy
## t = -1.956, df = 47, p-value = 0.05642
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
## -0.399290315 0.005610675
## sample estimates:
## mean of x mean of y
## 3.152954 3.349794
##
## [1] "okay"
##
## Two Sample t-test
##
## data: vals.friend and vals.enemy
## t = -2.0373, df = 47, p-value = 0.04727
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
## -0.547342924 -0.003453123
## sample estimates:
## mean of x mean of y
## 1.979349 2.254747
##
## [1] "amazing"
##
## Two Sample t-test
##
## data: vals.friend and vals.enemy
## t = -0.77599, df = 47, p-value = 0.4416
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
## -0.2619146 0.1161021
## sample estimates:
## mean of x mean of y
## 4.506582 4.579488
